System and Method for Uninterrupted Communication Across Black Spots for Multi Interface Mobile Nodes

1. A system, comprising: a processor to: provide, based on network environment information, a radio frequency (RF) map comprising (i) information on signal strength throughout a coverage region associated with a first point of attachment for a first network, and (ii) terrain information indicative of tactile signal obstacles within the coverage region associated with the first point of attachment for the first network; predict, based on the RF map that includes (i) the information on signal strength throughout the coverage region associated with the first point of attachment, and (ii) the terrain information indicative of tactile signal obstacles within the coverage region, a black spot region for a first communication node connected to the first point of attachment for the first network; and control a handover of a communication session of the first communication node from the first network to a second network based on the predicted black spot region, wherein the communication session is between the first communication node and a second communication node, and the communication session of the first communication node is handed over from the first network to the second network while maintaining the communication session between the first communication node and the second communication node, and wherein the black spot region comprises a region wherein a first receiver signal strength associated with the first point of attachment is lower than a signal strength threshold and a second receiver signal strength associated with a second point of attachment of the second network is greater than the signal strength threshold.

2. The system of claim 1 , wherein: the network environment information comprises at least one of transmitter characteristics of the first point of attachment, antenna characteristics of the first point of attachment, a RF propagation model of the first point of attachment, and environmental conditions and the terrain information in the coverage region associated with the first point of attachment.

3. The system of claim 1 , wherein: the first communication node comprises the processor.

4. The system of claim 1 , further comprising: a core network providing a connection between the first communication node and the second communication node.

5. A method, comprising: providing, based on network environment information, a radio frequency (RF) map comprising (i) information on signal strength throughout a coverage region associated with a first point of attachment for a first network, and (ii) terrain information indicative of tactile signal obstacles within the coverage region associated with the first point of attachment for the first network; predicting, based on the RF map that includes (i) the information on signal strength throughout the coverage region associated with the first point of attachment, and (ii) the terrain information indicative of tactile signal obstacles within the coverage region, a black spot region for a first communication node connected to the first point of attachment for the first network; and performing a handover of a communication session of the first communication node from the first network to a second network based on the predicted black spot region, wherein the communication session is between the first communication node and a second communication node, and the communication session of the first communication node is handed over from the first network to the second network while maintaining the communication session between the first communication node and the second communication node, and wherein the black spot region comprises a region wherein a first receiver signal strength associated with the first point of attachment is lower than a signal strength threshold and a second receiver signal strength associated with a second point of attachment of the second network is greater than the signal strength threshold.

6. The method of claim 5 , wherein the black spot region is predicted based on the RF map and information about a mobility pattern of the first communication node.

7. The method of claim 6 , further comprising tracking movement of the first communication node to determine the mobility pattern of the first communication node.

8. The method of claim 5 , wherein performing the handover comprises performing at least one of a handover necessity estimation, a target network selection, and a handover triggering condition estimation.

9. The method of claim 8 , wherein performing the target network selection comprises selecting the second network from a plurality of candidate networks, the second network providing a connection for the communication session between the first communication node and the second communication node.

10. The method of claim 8 , wherein performing the handover triggering condition estimation comprises determining a point of time to initiate the handover to the second network.

11. The method of claim 8 , wherein performing the handover necessity estimation comprises determining a cost and a benefit of the handover.

12. The method of claim 5 , wherein predicting the black spot region comprises determining whether the first communication node will encounter the black spot region within a determined geographical region or time period.

13. The method of claim 5 , further comprising providing a trigger, wherein the trigger is provided when the first communication node enters a vicinity of the black spot region, the vicinity being determined by a time threshold value corresponding to a time for completing the handover of the communication session from the first network to the second network before the first communication node enters the black spot region.

14. The method of claim 13 , wherein the trigger is provided when the black spot region is determined as being in a projected path of the first communication node, the projected path being determined using at least one of a location, velocity, and sojourn time of the first communication node.

15. The method of claim 5 , wherein the network environment information comprises at least one of transmitter characteristics of the first point of attachment, antenna characteristics of the first point of attachment, a RF propagation model of the first point of attachment, and environmental conditions and the terrain information in the coverage region associated with the first point of attachment.

16. The method of claim 11 , further comprising: transmitting a registration message to the second communication node prior to performing the handover necessity estimation; and receiving an update acknowledgement message from the second communication node after performing the handover necessity estimation.

17. One or more non-transitory computer-readable storage media having stored thereon a computer program that, when executed by one or more processors, causes the one or more processors to perform acts comprising: providing, based on network environment information, a radio frequency (RF) map comprising (i) information on signal strength throughout a coverage region associated with a first point of attachment for a first network, and (ii) terrain information indicative of tactile signal obstacles within the coverage region associated with the first point of attachment for the first network; predicting, based on the RF map that includes (i) the information on signal strength throughout the coverage region associated with the first point of attachment, and (ii) the terrain information indicative of tactile signal obstacles within the coverage region, a black spot region for a first communication node connected to the first point of attachment for the first network; and performing a handover of a communication session of the first communication node from the first network to a second network based on the predicted black spot region, wherein the communication session is between the first communication node and a second communication node, and the communication session of the first communication node is handed over from the first network to the second network while maintaining the communication session between the first communication node and the second communication node, and wherein the black spot region comprises a region wherein a first receiver signal strength associated with the first point of attachment is lower than a signal strength threshold and a second receiver signal strength associated with a second point of attachment of the second network is greater than the signal strength threshold.

18. The one or more non-transitory computer-readable storage media of claim 17 , wherein performing the handover comprises performing at least one of a handover necessity estimation, a target network selection, and a handover triggering condition estimation.

19. The method of claim 5 , wherein the terrain information indicative of the tactile signal obstacles within the coverage region comprises information indicative of a location of at least one of a building or an obstruction.